Is there any standard which specifies the requirement of manhole before the underground power cables enters building Main switch board room?Is this is standard industrial practice?In one of the Industrial control room building project i am doing in middle-east, designer/consultant has proposed...
Connected load will be around 300KW on 480 volts bus(lighting, small power and HVAC units( maximimum motor size 20KW only. Fault rating on 13.8KV side bus is 500MVA.I am concerned about only protection relaying purpose. Metering is just for indication purpose only.
We are trying to use one spare feeder for energising one new Transformer(750KVA,13.8kV/480Volts,60Hz.6%(Z), using feeder 1200Amps,breaker(VCB) having 600/5, ANSI C200 class current transfomer(Bus bar mounted) for protection relaying and measuring purpose. Is there any accuracy issue with this CT...
Is there any Inernational standaards that specifies requirements of conservator type or hermetically sealed transformer to be manufcatured or used?I mean for oil cooled(ONAN) transformers any specific requirements which type to be used?Or is it user specified requirements?What is stanadard...
